Shuttle tension



W. S. WELLS.

SHUTTLE TENSLON.

APPucATmN man DEC. 9, 1919.

Patented Sept. 28, 1920,

WITNESS Yso' WILLIAM s; WELLS, or son-'rei Nl QFFIQE.

BETHLEHEM, ENNSYLVANIA.

SHUTTLE TENSION.

.w assises.

Application filed 'Became-ei 9, i933.

To all w 5,0m t may concer/n Be it known that I, lWILLIAM S. IVELLS, acitizen of the United States, residing at South Bethlehem, the county ofLehigh and State of Pennsylvania, have invented .in new and usefulimprovements in 'tle Tensions, of which'the following is aspecification.

rhis invention relates to tension means shuttles having rotary weftpackages and means to guiee the weft in tangential relation to the packein being withdrawn therefrom, and more particularly it relates totension means of this class in which a braking device bears against thepackage and the braking pressure of said device is controlled by theweft. The prin-cipal object of the invention is to provide a tensiondevice of the class indicated which may be made to preserve a moreequable tension than the known devices, regardless of whether the pullon the weft comes suddenly or graduallu In the drawing, Figure l bodyingthe Fig. 2 F l;

Figs. 3 and e are details illustrating dif-Y ferentV positionsof theparts; and

Fig. 5 is a detail illustratinghow the device is adjusted.

In the shuttle body (which may be of any form, that shown being intendedfor use in the loom set forth in my Letters Patent No. 1,319,196), whichincludes the body proper or shell a and the bow o, is arranged thethread package. here taken as consisting of a core c journaled in theshell in the bearings Z and the weft windings e on the core.

The bow has a pair of thread guides f opposite the transverse center ofthe pack. age. f

In one side of the bow is freely pivoted the brake member g in the formof a blade whose free end is adapted to bear against the package, asshown.

To the other side of the bow is fixed the pressure member z, here shownas a spring blade.

z' designates a spiral spring having at one end a thread guide j. Theend of the pressure member has a hole lc therein which is of lessdiameter than the spring z' but of suitably greater gage than thethickness of each coil of the spring. The spring is in is a plan viewcfa shuttle present invention, is a sectional view on line 2-2 ofSpecilcatioii of Letters Patent.

Patented Sept. 28, 1920.

Serial ll'o. 343,593.

effectscrewed into this hole, as shown best in Fig. 5, and since it istight-wound (the coils thereof when it is relaxed abutting orapproximately abuttingeach other) it is held firmly in place in memberit. As mounted in said member 7i it stands at one side of the centraltransverse axis of the shuttle, its inner end abutting member g.

is a stop projecting inwardly of the bow and adapted to limit the inwardmovement of the brake member g when the packis removed from theshuttle.- In use the threal from theV package cX- tends first throughone guide f, then through the guide j and then through the other guideif (the threading of the guides readily accomplished upon holding guidebetween and in alinement with guides 7) Each time the thread issubjected to a pull, it first more or less extends the relativelylighter spring before it can effect any reduction of the pressure of thespring inember /l/ on the brake member ,(7. The action of the device isthus rendered extremely delicate, and however vsudden or violent thepull be the release of the package is always gradnak so that an eauableor unitorin ten sion is the result, it being understood that the deviceis first adjusted to suit the work it is called on to do by turning thespring t' and thus screwing it in member 7i; the turning or screwing inone direction results in increased distance between members g and 7L`andreduces the free or tliread-.fgiiide` including portion of the spring(which stifl ens the action of the device) and in the other directionresults in reducing the distance between said members and increasing thefree end portion of the spring (which eases or device).

relaxes the action of the In view of Figs. 3 and elit will be seen thatfriction between the spring e' and meiner g as a factor interfering withthe free play of the parts is avoided because the spring maintains aconstant position of contact with said member, bending one way or theother as the members g and 7L move to different angular positions withreference to each other.

Havingl thus fully described my invention,

what I claim as new and Letters Patent is l. In combination, the shuttlebody having means to support a rotary thread package and also having athread guide, and means, controlled by the thread, to exert desire tosecure by :i against the other.

,l member for the package, and means, con-` trolled bythe thread,ltoexert pressure on spring Vage and also having a thread package, andmeans, conbraking pressure on the package including a spring memberattached to the body and a spiral spring thread guiding device screwedinto said member. v

2. ln combination, the shuttle body havthread pack-V ing means` tosupport a rotary age and also having a thread guide, a brake member forthe package, and means, con.- trolledby the thread, to exert pressure onthe brake member including a pressure member attached'to the body Vand aspiral spring screwedv into Y one member and bearing 3. Inl combination,the shuttle body having means to support a rotary thread package andalso having athread guide, a brake the Vbrake member including apressure membe1 attached to the body and a spiral screwed intopnefmemberand bearing endi'vise ythereof against the other.

d.V ln 'cembinatiom the shuttlev body vhaving means to support a'rotarythread package and also having a thread guide, a brake member for thepackage, and means, vcontrolled by the thread', to exert pressure V,on

the brake member including a 'pressure member attached to the body and aspiral springfscrewed into one member and bearing endi'vise thereofagainst the other, said members being movable into -different angu-y larrelationsy `to each other.v

5. ln combination, the shuttle body having means to support a rotarythread packguide, a brake member tor the trolled by the thread, to4exert pressure on thevv brake member including a pressure 7.V YIncombinatiomthe shuttle body hav- Y Ying means to support a lrotarythread package and also having a thread guide, a brake member 'for thepackage, and means, controlled by the thread', to exert pressure on theybrake member attached to the body and overlying the brake member and aspiral spring carried by the pressure member and bearing at one endagainst the brake memberVY and having at its other end athread guide.

'8'. ln combination, theshuttle body having meansto support a 'rotarythread `package and also having a thread guide, and means, controlled bythe thread, to exert braking pressure on the package including ablade-like brake member attached at one end to said bodyl 'and bearingatV the other end against the package and a spring means bearing againstthe brake member near the iir'st-named end of the latter and including ablade spring vattached at vone end to said body.

ln testiinonywhereot l ami; my signature.

`Wi'LLiai/i s. WELLS. f

member including a pressure.

